3368991 has 4 divisors (see below), whose sum is σ = 4491992. Its totient is φ = 2245992.

The previous prime is 3368957. The next prime is 3368993. The reversal of 3368991 is 1998633.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3368991 - 2¹⁸ = 3106847 is a prime.

It is a super-2 number, since 2×3368991² = 22700200716162, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

3368991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3368993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561496 + ... + 561501.

It is an arithmetic number, because the mean of its divisors is an integer number (1122998).

Almost surely, 2^3368991 is an apocalyptic number.

3368991 is a deficient number, since it is larger than the sum of its proper divisors (1123001).

3368991 is a wasteful number, since it uses less digits than its factorization.

3368991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123000.

The product of its digits is 34992, while the sum is 39.

The square root of 3368991 is about 1835.4811358333. The cubic root of 3368991 is about 149.9109248924.

The spelling of 3368991 in words is "three million, three hundred sixty-eight thousand, nine hundred ninety-one".